Ответ:

  1. \(47000 - 7000 = 40000\).
  2. \(875000 - 70000 = 805000\).
  3. \(34000 - 30000 = 4000\).
  4. \(3510000 - 500000 - 1000 = 3010000 - 1000 = 3009000\).
  5. \(50000 + 4000 = 54000\).
  6. \(400000 + 20000 + 3000 = 423000\).

Ответ: 40000; 805000; 4000; 3009000; 54000; 423000.